<template>
	<view>
		<view class="search-box">
			<uni-search-bar @input="input" :radius="100" ></uni-search-bar>
		</view>
		<!-- 搜索建议区域 -->
		<view class="sugg-list" v-if="searchResults.length !== 0">
			<view @click="gotoDetail(item)" class="sugg-item" v-for="(item,i) in searchResults" :key="i">
				<view class="goods-name">
					{{item.goods_name}}
				</view>
				<uni-icons type="arrowright" size="16" ></uni-icons>
			</view>
		</view>
		<!-- 搜索历史 -->
		<view class="history-box" v-else>
			<!-- 标题区域 -->
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="17"  @click="clean"></uni-icons>
			</view>
			<!-- 列表区域 -->
			<view class="history-list">
				<uni-tag :text="item2" v-for="(item2,i2) in histories" :key="i2" @click="gotoGoodsList(item2)"></uni-tag>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer:null,
				kw:'',
				//搜索列表
				searchResults:[],
				//搜索关键词的历史数据
				historyList:[]
			};
		},
		onLoad() {
			this.historyList=JSON.parse(uni.getStorageSync('kw') || '[]')
		},
		methods:{
			//input输入事件的函数
			input(e){
				// console.log(e)
				clearTimeout(this.timer)
				this.timer=setTimeout(()=>{
					// console.log('e:'+e)
					this.kw=e
					this.getSearchList()
				},500)
			},
			//获取搜索数据方法
			async getSearchList(){
				// console.log('this'+this.kw)
				if(this.kw===''){
					this.searchResults=[]
					return
				}
			const {data:res} = await uni.$http.get('/api/public/v1/goods/qsearch',{query:this.kw})
			if(res.meta.status!==200) return uni.$showMsg()
			this.searchResults=res.message
			this.saveSearchHistory()
			},
			gotoDetail(item){
				uni.navigateTo({
					url:'/subpkg/goods_detail/goods_detail?goods_id='+item.goods_id
				})
			},
			//保存搜索关键词的方法
			saveSearchHistory(){
				// this.historyList.push(this.kw)
				const set=new Set(this.historyList)
				set.delete(this.kw)
				set.add(this.kw)
				// 打印set
				// console.log(set)
				this.historyList=Array.from(set)
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
				
			},
			clean(){
				this.historyList=[]
				uni.setStorageSync('kw','[]')
			},
			gotoGoodsList(kw){
				console.log('kw'+kw)
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?query='+kw
				})
			}
			
		},
		computed:{
			histories(){
				return [...this.historyList].reverse()
			}
		}
	}
</script>

<style lang="scss">
.search-box{
	position: sticky;
	top: 0;
	z-index: 999;
}


.sugg-list{
	padding:0 5px;
	.sugg-item{
		font-size: 12px;
		padding: 13px 0;
		border-bottom: 1px solid #efefef;
		display: flex;
		align-items: center;
		justify-content: space-between;
		.goods-name{
			white-space: nowrap;
			overflow: hidden;
			text-overflow: ellipsis;
			margin-right: 3px;
		}
	}
}

.history-box{
	padding: 0 5px;
	.history-title{
		display: flex;
		justify-content: space-between;
		height: 40px;
		align-items: center;
		font-size: 13px;
		border-bottom: 1px solid #efefef;
	}
	.history-list{
		display: flex;
		flex-wrap: wrap;
		
		.uni-tag{
			margin-top: 5px;
			margin-right: 5px;
		}
	}
}
</style>
